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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Basic and Diluted Earnings per share
The following table sets forth the calculation of EPS for the years ended December 31, 2015, 2014, and 2013:
 
 
Year Ended December 31,
 
 
2015
 
2014
 
2013
 
 
(In thousands, except per share
amounts)
Weighted average basic common shares outstanding
 
23,148

 
23,380

 
23,096

Dilutive effect of contingently convertible notes and warrants
 
—

 
1,499

 
2,213

Dilutive effect of employee stock purchases, net of assumed repurchase of treasury stock
 
4

 
6

 
5

Weighted average dilutive common shares outstanding
 
23,152

 
24,885

 
25,314

Basic:
 
 
 
 
 
 
Net income
 
$
93,999

 
$
93,004

 
$
113,992

Less: Earnings allocated to participating securities
 
3,595

 
3,643

 
4,963

Earnings available to basic common shares
 
$
90,404

 
$
89,361

 
$
109,029

Basic earnings per common share
 
$
3.91

 
$
3.82

 
$
4.72

Diluted:
 
 
 
 
 
 
Net income
 
$
93,999

 
$
93,004

 
$
113,992

Less: Earnings allocated to participating securities
 
3,595

 
3,468

 
4,599

Earnings available to diluted common shares
 
$
90,404

 
$
89,536

 
$
109,393

Diluted earnings per common share
 
$
3.90

 
$
3.60

 
$
4.32